EP1570775A2 - Dispositif autonome de chauffage d'un liquide et procédé de chauffage d'un liquide - Google Patents
Dispositif autonome de chauffage d'un liquide et procédé de chauffage d'un liquide Download PDFInfo
- Publication number
- EP1570775A2 EP1570775A2 EP05354011A EP05354011A EP1570775A2 EP 1570775 A2 EP1570775 A2 EP 1570775A2 EP 05354011 A EP05354011 A EP 05354011A EP 05354011 A EP05354011 A EP 05354011A EP 1570775 A2 EP1570775 A2 EP 1570775A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- heating
- container
- heat source
- thermally conductive
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/24—Warming devices
- A47J36/28—Warming devices generating the heat by exothermic reactions, e.g. heat released by the contact of unslaked lime with water
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/24—Warming devices
- A47J36/2411—Baby bottle warmers; Devices for warming baby food in jars
- A47J36/2416—Baby bottle warmers; Devices for warming baby food in jars with a heat storage element or material
Definitions
- the invention also relates to a method for heating a liquid by means of such a heating device, more particularly when the container does not has only one opening.
- the document FR-A-2712187 describes a self-heating bottle including a bottle and a heating part in which the bottle can be housed and having a sealed space a heating product that can regenerate, for example a solution aqueous salt maintained in the state of supercooling.
- a triggering device the heater is disposed on an outer wall of the heating portion of in order to trigger an exothermic reaction of the heating product and to heat the contents of the bottle when the wall thereof is brought into contact with the heating part.
- This type of heating via the walls of the container, However, this has the disadvantage of being slow and inhomogeneous.
- the device comprises a container equipped, in its upper part, with a neck and a heating compartment arranged under the container.
- the heating compartment is connected to a tank of fuel so as to produce a flame ensuring, by contact, the heating a portion of a heat pipe disposed in the heating compartment while another part of the heat pipe is installed in the container.
- the heat pipe allows, thus, to transfer the heat produced in the heating compartment to the liquid contained in the container.
- the heating source consuming fuel during each use, it must be refueled quite often. Replenishment may be impractical to implement but also be a source of danger.
- the heat pipe being disposed of permanently in the container, the useful volume of liquid in the container is reduced.
- the aim of the invention is a device for heating a liquid that remedies these disadvantages.
- this goal is achieved by the fact that the heat source has a thermally conductive element immersed in the product heating element and having an external projecting part introduced into the container when the heat source is attached to the opening of the container.
- the thermally conductive element is a heat pipe or a diphasic thermosiphon.
- the periphery of the outer portion of the thermally conductive element comprises fins.
- the part of the element thermally conductive dive in the heating product comprises at its periphery of the fins.
- the invention also aims at a method for heating a liquid at means of such a heating device, more particularly when the container has only one opening, easy to implement, reliable and not dangerous.
- a device for heating a liquid used in the field of food has a container 1, as shown in Figure 1.
- the container 1 has a bottom 2 and a side wall 3 defining a space intended to contain a liquid 4 and prolonged, in its part upper, by an opening 5 such as a neck for example.
- the neck 5 can, for example, having on its outer periphery, a thread intended to cooperate with a cap.
- the heating device also comprises a heat source 6 such as than that shown in Figure 2 and intended to cooperate with the container 1.
- the heat source 6 comprises an envelope 7 containing a heating product 8 and actuating means for initiating an exothermic reaction of the heating product.
- the heating product 8 is, for example, constituted by a aqueous solution of a salt maintained in the supercooled state, such as sodium trihydrate and the actuating means make it possible to initiate a exothermic crystallization of salt.
- the volume and mass of the source of 6 are preferably defined according to the mass of liquid to heat and depending on the thermal characteristics of the heat source. For example, it is preferable to use 0.130 kg of aqueous solution of sodium acetate trihydrate to increase by 20 ° C, the temperature of 0.2 liter of water.
- an aqueous solution of a salt maintained in the state of supercooling has the advantage of being able to be regenerated, once the exothermic reaction is complete. This allows you to use the source of heat indefinitely without having any problem related to replenishing the heat source.
- the priming of the heating is easy to put in because a simple mechanical actuation, at a particular location, enough to trigger the exothermic reaction.
- the temperature of the Exothermic reaction can not exceed the value of 55 ° C, thus avoiding a excessive heating of the liquid may cause burns.
- the enclosure 9 comprises a bottom provided with an opening 10 allowing access to an actuator monostable mechanism 11, disposed in the casing 7 and intended to initiate the exothermic reaction of the heating product.
- the enclosure 9 also includes in its upper part, an orifice 12 having a shape complementary to that of the neck 5 of the container 1 and preferably having an internal thread allowing to screw the heat source 6 on the neck 5 of the container 1.
- the orifice 12 of the chamber 9 thus allows the attachment of the heat source 6 to the neck 5 of the container 1, during assembly of the heating device.
- the enclosure 9 makes it possible, in particular, to protect the envelope 7 from external shocks and to ensure the maintenance of the entire heating device, during its operation. It also ensures thermal insulation of the heat source 6 with respect to the external environment. This avoids thermal losses while protecting the user against the heat released.
- the transfer of heat between the heat source 6 and the liquid 4 contained in the container 1, once the heat source 6 fixed on the neck of the container 1, is ensured by means of a thermally conductive element 13.
- the thermally conductive element 13, integral with the heat source 6, has a portion immersed in the heating product 8, for example in a aqueous solution of a salt maintained in the supercooled state and an external part 13a ( Figure 2).
- the outer portion 13a protrudes outwardly and is intended to be introduced into the container 1 when the heat source 6 is fixed on the neck 5 of the container.
- the envelope 7 comprises, then, an orifice penetrated, in a sealed manner, by the thermally conductive element and the sealing of the casing 7 is, for example, provided by a seal 14.
- the seal 14 can be dynamic or static and arranged around the element thermally conductive, at the orifice of the casing 7.
- the thermally conductive element 13 can, for example, be a heat pipe, that is to say a tube partially filled by a liquid and its vapor, or a diphasic thermosiphon.
- a heat pipe the heat is transferred from the hot part to the cold part of the tube, by vaporization of the liquid phase and condensation of the vapor in the part Cold.
- the external part 13a of the thermally conductive element 13, protruding outwards corresponds to the cold part of the heat pipe while the rest of the tube, immersed in the heating product, corresponds to the hot part of the heat pipe.
- the periphery of the external part 13a of the thermally conductive element 13 may comprise fins 13b for promoting exchanges between the thermally conductive element 13 and the liquid 4 to heat.
- the fins 13b are preferably oriented so as to favor the natural convection movements of the liquid.
- the length of the portion of the thermally conductive element 13 immersed in the heating product 8 is the largest possible, so as to optimize the heat exchange between the heating product and the element thermally conductive 13, during the exothermic reaction.
- the exchange between the heating product and the thermally conductive element 13 can also be improved by fins 15 disposed at the periphery of the part of the thermally conductive element immersed in the product 8.
- the fins may also be replaced by a material porous.
- the mechanical actuator 11 for triggering the exothermic reaction of the heating product is preferably arranged opposite the end of the part of the thermally conductive element 13 dipped into the product 8.
- the end of the thermally conductive element 13 then forms a support for the actuator.
- the actuator can, for example, be fixed by clipping or be seized at the end of the part of the element thermally driver 13.
- such a heating device is used to heat a liquid.
- the heat source 6 is fixed on the neck 5 of the container 1 containing the liquid, for example by screwing, so as to introduce the part 13b external of the thermally conductive element 13 in the container 1.
- the envelope 7 of the heat source 6, comprising the heating product is thus disposed outside the container 1.
- the transfer of heat from the casing 7 to the liquid contained in the container 1 is then made by means of the thermally conductive element 13 immersed in the heating product 8 and whose outer projecting portion 13a is introduced into the container 1 when the heat source 6 is fixed on the neck 5 of the container 1.
- the heating device as well as assembled, can be turned over so that the container 1 is placed above of the heat source 6.
- the heat source 6 is previously fixed, tightly, on the neck 5.
- the seal is, for example, example, provided by a flat gasket 16 disposed in the orifice 12 of the enclosure 9.
- Such an arrangement favors the transfer of heat from the hot part to the cold part of the thermally conductive element, especially in the case where the thermally conductive element is constituted by a thermosiphon biphasic.
- the actuating means are then triggered to initiate the reaction exothermic heating product and cause heating of the part of the thermally conductive element immersed in the heating product.
- the thermally conductive element transfers, then, the heat towards the part external 13a, then the liquid 4 contained in the container 1.
- a heating method by means of such a device has the advantage of being easy to implement, not dangerous and reliable.
- the thermally conductive element is integral with the source of heat and it is introduced only temporarily in the container, by the neck. This makes it possible to heat the liquid in a homogeneous, efficient and controllable, while allowing the same heat source to be used for several containers, of different types or of different capacities.
- the useful volume of liquid in the container is not reduced, so permanent, by the thermally conductive element.
- a heat source containing a heating product such as an aqueous solution of a supercooled salt makes it possible to obtain a device autonomous heating and can be transported.
- the source of heat is insensitive to shock and vibration and is capable of regenerate.
- the invention is not limited to the embodiment described above.
- the bottom 2 of the container 1 may also be provided with an opening, so, by for example, to facilitate the cleaning of the container 1.
- the heat source 6 can be attached to the opening of the bottom 2 of the container 1 instead of being fixed on the 5.
- the opening of the bottom 2 of the container 1 then makes it possible to introduce the part external projection (13a) of the conductive thermal element 13 in the container (1).
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cookers (AREA)
Abstract
Description
- un récipient muni d'au moins une ouverture et contenant ledit liquide,
- une source de chaleur comportant une enveloppe contenant un produit chauffant,
- des moyens de fixation de la source de chaleur sur l'ouverture du récipient
- et des moyens d'actionnement destinés à initier une réaction exothermique du produit chauffant.
- à fixer de manière étanche la source de chaleur sur l'ouverture du récipient,
- à retourner le dispositif de chauffage assemblé de manière à ce que le récipient soit placé au-dessus de la source de chaleur,
- et à déclencher les moyens d'actionnement.
Claims (11)
- Dispositif de chauffage d'un liquide comportant :un récipient (1) muni d'au moins une ouverture (5) et contenant ledit liquide (4),une source de chaleur (6) comportant une enveloppe (7) contenant un produit chauffant (8),des moyens de fixation de la source de chaleur (6) sur l'ouverture (5) du récipient (1)et des moyens d'actionnement (11) destinés à initier une réaction exothermique du produit chauffant,
dispositif caractérisé en ce que la source de chaleur (6) comporte un élément thermiquement conducteur (13) plongé dans le produit chauffant (8) et comportant une partie externe en saillie (13a) introduite dans le récipient (1) lorsque la source de chaleur (6) est fixée sur l'ouverture (5) du récipient (1). - Dispositif selon la revendication 1, caractérisé en ce que l'élément thermiquement conducteur (13) est un caloduc.
- Dispositif selon la revendication 1, caractérisé en ce que l'élément thermiquement conducteur (13) est un thermosiphon diphasique.
- Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la périphérie de la partie externe (13a) de l'élément thermiquement conducteur (13) comporte des ailettes (13b).
- Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la partie de l'élément thermiquement conducteur (13) plongée dans le produit chauffant (8) comporte à sa périphérie des ailettes (15).
- Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la partie de l'élément thermiquement conducteur (13) plongée dans le produit chauffant (8) comporte à sa périphérie un matériau poreux.
- Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le produit chauffant (8) est constitué par une solution aqueuse d'un sel maintenu à l'état de surfusion.
- Dispositif selon la revendication 7, caractérisé en ce que le sel est de l'acétate de sodium trihydraté.
- Dispositif selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la source de chaleur (6) comporte une enceinte (9) dans laquelle est disposée l'enveloppe (7) contenant le produit chauffant, les moyens d'actionnement (11) étant accessibles à travers une paroi de l'enceinte (9).
- Dispositif selon l'une quelconque des revendications 1 à 9, caractérisé en ce que les moyens de fixation sont des moyens de fixation étanche.
- Procédé de chauffage d'un liquide au moyen d'un dispositif de chauffage selon l'une quelconque des revendications 1 à 10 et dans lequel le récipient (1) ne comporte qu'une seule ouverture (5), caractérisé en ce qu'il consiste successivement :à fixer de manière étanche la source de chaleur (6) sur l'ouverture (5) du récipient (1),à retourner le dispositif de chauffage assemblé de manière à ce que le récipient (1) soit placé au-dessus de la source de chaleur (6),et à déclencher les moyens d'actionnement (11).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0402260 | 2004-03-04 | ||
FR0402260A FR2867264B1 (fr) | 2004-03-04 | 2004-03-04 | Dispositif autonome de chauffage d'un liquide et procede de chauffage d'un liquide |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1570775A2 true EP1570775A2 (fr) | 2005-09-07 |
EP1570775A3 EP1570775A3 (fr) | 2006-04-26 |
Family
ID=34746491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05354011A Withdrawn EP1570775A3 (fr) | 2004-03-04 | 2005-03-02 | Dispositif autonome de chauffage d'un liquide et procédé de chauffage d'un liquide |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1570775A3 (fr) |
FR (1) | FR2867264B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8319154B2 (en) | 2005-04-13 | 2012-11-27 | Jim Shaikh | Self-heating fluid container |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE663353C (de) * | 1936-09-03 | 1938-08-04 | Max Hellmuth Kaden | Tauchsiederartige Waermvorrichtung fuer Feldflaschen u. dgl. |
US3874365A (en) * | 1974-07-10 | 1975-04-01 | Thurman Pava | Self-contained immersion exothermic fuel charge |
EP0130757A2 (fr) * | 1983-06-30 | 1985-01-09 | The State of Israel Ministry of Defence Military Industries | Dispositif pour le chauffage d'un liquide |
EP1129655A1 (fr) * | 2000-02-29 | 2001-09-05 | PNT Technology Inc. | Une bouilloire portable en forme de bouteille |
US6622718B1 (en) * | 2002-09-12 | 2003-09-23 | Chih-Min Lu | Thermal flask with a vacuum solar heating device |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2712187A1 (fr) | 1993-10-25 | 1995-05-19 | Savariau Jean Pierre | Ensemble formant biberon auto chauffant. |
-
2004
- 2004-03-04 FR FR0402260A patent/FR2867264B1/fr not_active Expired - Fee Related
-
2005
- 2005-03-02 EP EP05354011A patent/EP1570775A3/fr not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE663353C (de) * | 1936-09-03 | 1938-08-04 | Max Hellmuth Kaden | Tauchsiederartige Waermvorrichtung fuer Feldflaschen u. dgl. |
US3874365A (en) * | 1974-07-10 | 1975-04-01 | Thurman Pava | Self-contained immersion exothermic fuel charge |
EP0130757A2 (fr) * | 1983-06-30 | 1985-01-09 | The State of Israel Ministry of Defence Military Industries | Dispositif pour le chauffage d'un liquide |
EP1129655A1 (fr) * | 2000-02-29 | 2001-09-05 | PNT Technology Inc. | Une bouilloire portable en forme de bouteille |
US6622718B1 (en) * | 2002-09-12 | 2003-09-23 | Chih-Min Lu | Thermal flask with a vacuum solar heating device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8319154B2 (en) | 2005-04-13 | 2012-11-27 | Jim Shaikh | Self-heating fluid container |
Also Published As
Publication number | Publication date |
---|---|
FR2867264B1 (fr) | 2006-12-08 |
FR2867264A1 (fr) | 2005-09-09 |
EP1570775A3 (fr) | 2006-04-26 |
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